Green’s Dictionary of Slang

diesel-dyke n.

also diesel, diesel dike, dieseler
[SE diesel + dyke n.]

1. (orig. US) a conspicuously masculine lesbian.

[US]L. Lipton Holy Barbarians 316: A highpower lesbian [...] diesel-dyke, bull-dyke.
S. Britain These Curious Pleasures [ebook] Listened to enough confessions from soft-hearted diesel dykes.
[US]R. Abrahams Deep Down In The Jungle 264: Some very male-imitating lesbians are also called diesel-dykes.
[US]L. Bruce Essential Lenny Bruce 216: A real obvious diesel dike.
[US]S. King Dead Zone (1980) 364: Couple of old alky diesel-dykes, that’s what they are.
[US]H. Max Gay (S)language.
[US]S. Morgan Homeboy 83: That dieseler wont fuck with us no more. [Ibid.] 93: The dieseldyke held her breath to better hear, swearing vengeance.
(con. 1950s) Kennedy & Davies Boots of Leather (2014) 7: Sometimes butches of the rough crowd were referred to as ‘diesel dykes’ or ‘truck drivers’.
[US]E. Little Another Day in Paradise 151: Lipstick lesbos and muscle-bound, badly tattooed diesel dykes.
[US]J. Ellroy ‘Hollywood Fuck Pad’ in Destination: Morgue! (2004) 207: It was an ex-head shop. Some diesel dykes ran it.
[Aus]L. Redhead Cherry Pie [ebook] A bunch of femos and diesel dykes.
[US]D. Winslow The Force [ebook] ‘[Y]our wife will be in Danbury with the diesels and the bull dykes’.

2. attrib. use of sense 1.

[UK]A. Close Official and Doubtful 347: I’ve known women who managed it with a diesel-dyke haircut and a pair of dungarees.